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Old 07-27-2006, 11:58 PM   #1
Sideshowbob
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Member#: 50304
Join Date: Dec 2003
Chapter/Region: NESIC
Location: HTown Tehas
Vehicle:
97 TJ Wheeler
12' TSX Wagon

Default Installing 04/05 STi Takeoff HID's on a 04/05 WRX

I am creating this to clarify several threads that had popped up previously having to do with installing the entire STi HID Headlamp (Headlight) into a 2004 or 2005 WRX.

I have personally only done this on a 2004 with 2004 STi HID's, but I can't imagine anything except the wire colors being different.

There is another way to do this also. Fellow member, username wagons_ho , makes and sells a adapter that avoids cutting and wiring and also sells a harness that makes the leveling motor work.

Credits go out to jac04 for the original instructions.

Instructions assume that you know how to remove & replace the headlights, so I won't go into that. Instructions also assume that you know how to use a soldering gun/heat shrink tubing, etc.

The standard disclaimer applies - This is what I did on my car. You should verify everything before performing this modification. I am not responsible for any damage or problems associated with this modification. Consult the service manual wiring diagrams WI-135 and WI-138.


1) Disable the DRLs by disconnecting the DRL module behind the glove box. This is important. (search this forum for instructions)

2)On each headlight, there is a short pigtail lead that goes from the ballast to a black 2-prong plug. Remove these black plugs. You will then have one red and one black wire coming out of each ballast. The red are your positive leads and the black are the negative (ground) leads.

3) Solder a 14"-20" length of black wire onto each of the the existing black wires an put a ring terminal on the end of each.

4) LEFT HEADLIGHT (driver's side): Cut off the existing grey plug that plugged into your low beams and remove a few inches of the black protective tubing. You will have a yellow/red wire and a red/blue wire. Cap off the yellow/red wire - you will not be using it. Ensure that the red/blue wire is positive and is energized when the headlight switch is in the on position. Solder the red/blue wire to the red wire coming out of the ballast. Use heat shrink to weatherproof the connection. Take the black wire with the ring terminal on the end and attach it to the ground point next to the battery.

4) RIGHT HEADLIGHT (passenger's side): Cut off the existing grey plug that plugged into your low beams and remove a few inches of the black protective tubing. You will have a yellow/red wire and a blue/white wire. Cap off the yellow/red wire - you will not be using it. Ensure that the blue/white wire is positive and is energized when the headlight switch is in the on position. Solder the blue/white wire to the red wire coming out of the ballast. Use heat shrink to weatherproof the connection. Take the black wire with the ring terminal on the end and attach it to the ground point next to the air box.

5) Plug in the high beams and clearance/signal lights on both sides.

6) Properly aim the lights.

7) Enjoy your HID lights.



By the way, the 04/05 STi headlights are different from the standard WRX lights. The reflectors and bulb shields are different. I had a Catz HID kit on my car before switching to the STi lights. The Catz HIDs put out more light, but the beam pattern was not very good. The STi lights have an excellent beam pattern.
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Old 07-28-2006, 06:51 PM   #2
Jpapania
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Join Date: May 2004
Chapter/Region: TXIC
Location: Dallas, TX
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WR Blue

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Thanks for getting all this infor together. This is a mod I still want to do to my 04 wagon. HIDs are so cool,
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Old 10-28-2006, 02:20 AM   #3
BiggSean
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Location: Southern California
Vehicle:
2005 6MT 35R Wagon
Full STI drivetrain

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I'm about to perform this install on my 05 Wagon. Only I have a set of retrofits inside my WRX headlights with STI bulbs/ballasts. Did you use a different relay because of the higher current draw of the STI system?
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Old 08-13-2007, 05:03 AM   #4
n3v3r1
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This is my first post so I'll probably end up gettin chastised for my questions buuuuut I'll give it a whirl anyway. I'm having a hard time finding a plug and play harness for the 04-05 STi HID headlights to plug em into my 04 WRX, also trying to find a plug and play harness for the leveling switch. I COULD play with the wires myself but I value spendin a few extra $$ and getting something that looks cleaner and has been properly engineered
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Old 08-18-2007, 09:37 PM   #5
Thunderbolt2K
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The projectors in standard WRXs are cheap and completely inferior. I took them apart, and what I saw was amazing and confusing.
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Old 08-19-2007, 02:56 PM   #6
G3Red04WRX
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Quote:
Originally Posted by Thunderbolt2K View Post
The projectors in standard WRXs are cheap and completely inferior. I took them apart, and what I saw was amazing and confusing.
Not sure what you are referring to, but 04-05 do not have projectors.
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Old 08-21-2007, 10:49 PM   #7
spmclaugh
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Default Pics of connectors

I just thought that I'd add to this thread by posting some pictures of the connectors that were mentioned.

The gray HID connector, headlight-side male:




I don't have any pics of the engine-bay-side female connector, since I own an RS and not an STi. I've heard that you can search for part number 84981A from japanparts dt cm.

The low beam halogen connector, headlight-side male:




The low beam halogen connector, engine-bay-side female:




I'm thinking about making a mold, and then casting my own ABS plastic piece for the HID connector... Totally anal I know, I might get lazy and not do it. We'll see...

PS - I don't think any of these connectors are industry-standard whatsoever. Correct me if I'm wrong.
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